Quantum phase transition in an atomic Bose gas with a Feshbach resonance
Superconductivity
2014-10-13 v1 Strongly Correlated Electrons
Abstract
We show that in an atomic Bose gas near a Feshbach resonance a quantum phase transition occurs between a phase with only a molecular Bose-Einstein condensate and a phase with both an atomic and a molecular Bose-Einstein condensate. We show that the transition is characterized by an Ising order parameter. We also determine the phase diagram of the gas as a function of magnetic field and temperature: the quantum critical point extends into a line of finite temperature Ising transitions.
Keywords
Cite
@article{arxiv.cond-mat/0312446,
title = {Quantum phase transition in an atomic Bose gas with a Feshbach resonance},
author = {M. W. J. Romans and R. A. Duine and Subir Sachdev and H. T. C. Stoof},
journal= {arXiv preprint arXiv:cond-mat/0312446},
year = {2014}
}
Comments
4 pages, 2 figures